日期:2014-05-18  浏览次数:20425 次

取出缺失的日期
有一张表,字段: 名称ID 日期 ,日期正常是递增的,可有缺了的,现在想吧缺了的日期找出来,求sql语句,谢谢!

------解决方案--------------------
SQL code

GO
IF OBJECT_ID('TBL')IS NOT NULL
DROP TABLE TBL
GO
CREATE TABLE TBL(
日期 DATE
)
GO
INSERT TBL
SELECT '2012-03-01' UNION ALL
SELECT '2012-03-31'
go
declare @date date
select @date=MAX(日期) from tbl
;with t
as(
select * from tbl
union all
select dateadd(dd,1,a.日期) from t a
where not exists(select * from tbl b
where b.日期=DATEADD(DD,1,a.日期)
)
and a.日期<@date
)
select * from t 
where not exists(select 1 from tbl a where t.日期=a.日期)

/*
日期
2012-03-02
2012-03-03
2012-03-04
2012-03-05
2012-03-06
2012-03-07
2012-03-08
2012-03-09
2012-03-10
2012-03-11
2012-03-12
2012-03-13
2012-03-14
2012-03-15
2012-03-16
2012-03-17
2012-03-18
2012-03-19
2012-03-20
2012-03-21
2012-03-22
2012-03-23
2012-03-24
2012-03-25
2012-03-26
2012-03-27
2012-03-28
2012-03-29
2012-03-30
*/

------解决方案--------------------
http://topic.csdn.net/u/20090906/17/a91cd31e-abf7-4190-8486-c5491aa63c71.html?seed=1380177511&r=59598572#r_59598572